Fatal error: Uncaught Error: Interface "SMW\Importer\ContentCreator" not found in /var/www/html/extensions/SemanticMediaWiki/src/Importer/ContentCreators/DispatchingContentCreator.php:16 Stack trace: #0 {main} thrown in /var/www/html/extensions/SemanticMediaWiki/src/Importer/ContentCreators/DispatchingContentCreator.php on line 16